function createMd5(undefined) {
	"use strict";
	var add32 = function(a, b) {
			return a + b & 4294967295
		},
		hex_chr = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"];

	function cmn(q, a, b, x, s, t) {
		a = add32(add32(a, q), add32(x, t));
		return add32(a << s | a >>> 32 - s, b)
	}

	function md5cycle(x, k) {
		var a = x[0],
			b = x[1],
			c = x[2],
			d = x[3];
		a += (b & c | ~b & d) + k[0] - 680876936 | 0;
		a = (a << 7 | a >>> 25) + b | 0;
		d += (a & b | ~a & c) + k[1] - 389564586 | 0;
		d = (d << 12 | d >>> 20) + a | 0;
		c += (d & a | ~d & b) + k[2] + 606105819 | 0;
		c = (c << 17 | c >>> 15) + d | 0;
		b += (c & d | ~c & a) + k[3] - 1044525330 | 0;
		b = (b << 22 | b >>> 10) + c | 0;
		a += (b & c | ~b & d) + k[4] - 176418897 | 0;
		a = (a << 7 | a >>> 25) + b | 0;
		d += (a & b | ~a & c) + k[5] + 1200080426 | 0;
		d = (d << 12 | d >>> 20) + a | 0;
		c += (d & a | ~d & b) + k[6] - 1473231341 | 0;
		c = (c << 17 | c >>> 15) + d | 0;
		b += (c & d | ~c & a) + k[7] - 45705983 | 0;
		b = (b << 22 | b >>> 10) + c | 0;
		a += (b & c | ~b & d) + k[8] + 1770035416 | 0;
		a = (a << 7 | a >>> 25) + b | 0;
		d += (a & b | ~a & c) + k[9] - 1958414417 | 0;
		d = (d << 12 | d >>> 20) + a | 0;
		c += (d & a | ~d & b) + k[10] - 42063 | 0;
		c = (c << 17 | c >>> 15) + d | 0;
		b += (c & d | ~c & a) + k[11] - 1990404162 | 0;
		b = (b << 22 | b >>> 10) + c | 0;
		a += (b & c | ~b & d) + k[12] + 1804603682 | 0;
		a = (a << 7 | a >>> 25) + b | 0;
		d += (a & b | ~a & c) + k[13] - 40341101 | 0;
		d = (d << 12 | d >>> 20) + a | 0;
		c += (d & a | ~d & b) + k[14] - 1502002290 | 0;
		c = (c << 17 | c >>> 15) + d | 0;
		b += (c & d | ~c & a) + k[15] + 1236535329 | 0;
		b = (b << 22 | b >>> 10) + c | 0;
		a += (b & d | c & ~d) + k[1] - 165796510 | 0;
		a = (a << 5 | a >>> 27) + b | 0;
		d += (a & c | b & ~c) + k[6] - 1069501632 | 0;
		d = (d << 9 | d >>> 23) + a | 0;
		c += (d & b | a & ~b) + k[11] + 643717713 | 0;
		c = (c << 14 | c >>> 18) + d | 0;
		b += (c & a | d & ~a) + k[0] - 373897302 | 0;
		b = (b << 20 | b >>> 12) + c | 0;
		a += (b & d | c & ~d) + k[5] - 701558691 | 0;
		a = (a << 5 | a >>> 27) + b | 0;
		d += (a & c | b & ~c) + k[10] + 38016083 | 0;
		d = (d << 9 | d >>> 23) + a | 0;
		c += (d & b | a & ~b) + k[15] - 660478335 | 0;
		c = (c << 14 | c >>> 18) + d | 0;
		b += (c & a | d & ~a) + k[4] - 405537848 | 0;
		b = (b << 20 | b >>> 12) + c | 0;
		a += (b & d | c & ~d) + k[9] + 568446438 | 0;
		a = (a << 5 | a >>> 27) + b | 0;
		d += (a & c | b & ~c) + k[14] - 1019803690 | 0;
		d = (d << 9 | d >>> 23) + a | 0;
		c += (d & b | a & ~b) + k[3] - 187363961 | 0;
		c = (c << 14 | c >>> 18) + d | 0;
		b += (c & a | d & ~a) + k[8] + 1163531501 | 0;
		b = (b << 20 | b >>> 12) + c | 0;
		a += (b & d | c & ~d) + k[13] - 1444681467 | 0;
		a = (a << 5 | a >>> 27) + b | 0;
		d += (a & c | b & ~c) + k[2] - 51403784 | 0;
		d = (d << 9 | d >>> 23) + a | 0;
		c += (d & b | a & ~b) + k[7] + 1735328473 | 0;
		c = (c << 14 | c >>> 18) + d | 0;
		b += (c & a | d & ~a) + k[12] - 1926607734 | 0;
		b = (b << 20 | b >>> 12) + c | 0;
		a += (b ^ c ^ d) + k[5] - 378558 | 0;
		a = (a << 4 | a >>> 28) + b | 0;
		d += (a ^ b ^ c) + k[8] - 2022574463 | 0;
		d = (d << 11 | d >>> 21) + a | 0;
		c += (d ^ a ^ b) + k[11] + 1839030562 | 0;
		c = (c << 16 | c >>> 16) + d | 0;
		b += (c ^ d ^ a) + k[14] - 35309556 | 0;
		b = (b << 23 | b >>> 9) + c | 0;
		a += (b ^ c ^ d) + k[1] - 1530992060 | 0;
		a = (a << 4 | a >>> 28) + b | 0;
		d += (a ^ b ^ c) + k[4] + 1272893353 | 0;
		d = (d << 11 | d >>> 21) + a | 0;
		c += (d ^ a ^ b) + k[7] - 155497632 | 0;
		c = (c << 16 | c >>> 16) + d | 0;
		b += (c ^ d ^ a) + k[10] - 1094730640 | 0;
		b = (b << 23 | b >>> 9) + c | 0;
		a += (b ^ c ^ d) + k[13] + 681279174 | 0;
		a = (a << 4 | a >>> 28) + b | 0;
		d += (a ^ b ^ c) + k[0] - 358537222 | 0;
		d = (d << 11 | d >>> 21) + a | 0;
		c += (d ^ a ^ b) + k[3] - 722521979 | 0;
		c = (c << 16 | c >>> 16) + d | 0;
		b += (c ^ d ^ a) + k[6] + 76029189 | 0;
		b = (b << 23 | b >>> 9) + c | 0;
		a += (b ^ c ^ d) + k[9] - 640364487 | 0;
		a = (a << 4 | a >>> 28) + b | 0;
		d += (a ^ b ^ c) + k[12] - 421815835 | 0;
		d = (d << 11 | d >>> 21) + a | 0;
		c += (d ^ a ^ b) + k[15] + 530742520 | 0;
		c = (c << 16 | c >>> 16) + d | 0;
		b += (c ^ d ^ a) + k[2] - 995338651 | 0;
		b = (b << 23 | b >>> 9) + c | 0;
		a += (c ^ (b | ~d)) + k[0] - 198630844 | 0;
		a = (a << 6 | a >>> 26) + b | 0;
		d += (b ^ (a | ~c)) + k[7] + 1126891415 | 0;
		d = (d << 10 | d >>> 22) + a | 0;
		c += (a ^ (d | ~b)) + k[14] - 1416354905 | 0;
		c = (c << 15 | c >>> 17) + d | 0;
		b += (d ^ (c | ~a)) + k[5] - 57434055 | 0;
		b = (b << 21 | b >>> 11) + c | 0;
		a += (c ^ (b | ~d)) + k[12] + 1700485571 | 0;
		a = (a << 6 | a >>> 26) + b | 0;
		d += (b ^ (a | ~c)) + k[3] - 1894986606 | 0;
		d = (d << 10 | d >>> 22) + a | 0;
		c += (a ^ (d | ~b)) + k[10] - 1051523 | 0;
		c = (c << 15 | c >>> 17) + d | 0;
		b += (d ^ (c | ~a)) + k[1] - 2054922799 | 0;
		b = (b << 21 | b >>> 11) + c | 0;
		a += (c ^ (b | ~d)) + k[8] + 1873313359 | 0;
		a = (a << 6 | a >>> 26) + b | 0;
		d += (b ^ (a | ~c)) + k[15] - 30611744 | 0;
		d = (d << 10 | d >>> 22) + a | 0;
		c += (a ^ (d | ~b)) + k[6] - 1560198380 | 0;
		c = (c << 15 | c >>> 17) + d | 0;
		b += (d ^ (c | ~a)) + k[13] + 1309151649 | 0;
		b = (b << 21 | b >>> 11) + c | 0;
		a += (c ^ (b | ~d)) + k[4] - 145523070 | 0;
		a = (a << 6 | a >>> 26) + b | 0;
		d += (b ^ (a | ~c)) + k[11] - 1120210379 | 0;
		d = (d << 10 | d >>> 22) + a | 0;
		c += (a ^ (d | ~b)) + k[2] + 718787259 | 0;
		c = (c << 15 | c >>> 17) + d | 0;
		b += (d ^ (c | ~a)) + k[9] - 343485551 | 0;
		b = (b << 21 | b >>> 11) + c | 0;
		x[0] = a + x[0] | 0;
		x[1] = b + x[1] | 0;
		x[2] = c + x[2] | 0;
		x[3] = d + x[3] | 0
	}

	function md5blk(s) {
		var md5blks = [],
			i;
		for (i = 0; i < 64; i += 4) {
			md5blks[i >> 2] = s.charCodeAt(i) + (s.charCodeAt(i + 1) << 8) + (s.charCodeAt(i + 2) << 16) + (s
				.charCodeAt(i + 3) << 24)
		}
		return md5blks
	}

	function md5blk_array(a) {
		var md5blks = [],
			i;
		for (i = 0; i < 64; i += 4) {
			md5blks[i >> 2] = a[i] + (a[i + 1] << 8) + (a[i + 2] << 16) + (a[i + 3] << 24)
		}
		return md5blks
	}

	function md51(s) {
		var n = s.length,
			state = [1732584193, -271733879, -1732584194, 271733878],
			i, length, tail, tmp, lo, hi;
		for (i = 64; i <= n; i += 64) {
			md5cycle(state, md5blk(s.substring(i - 64, i)))
		}
		s = s.substring(i - 64);
		length = s.length;
		tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
		for (i = 0; i < length; i += 1) {
			tail[i >> 2] |= s.charCodeAt(i) << (i % 4 << 3)
		}
		tail[i >> 2] |= 128 << (i % 4 << 3);
		if (i > 55) {
			md5cycle(state, tail);
			for (i = 0; i < 16; i += 1) {
				tail[i] = 0
			}
		}
		tmp = n * 8;
		tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
		lo = parseInt(tmp[2], 16);
		hi = parseInt(tmp[1], 16) || 0;
		tail[14] = lo;
		tail[15] = hi;
		md5cycle(state, tail);
		return state
	}

	function md51_array(a) {
		var n = a.length,
			state = [1732584193, -271733879, -1732584194, 271733878],
			i, length, tail, tmp, lo, hi;
		for (i = 64; i <= n; i += 64) {
			md5cycle(state, md5blk_array(a.subarray(i - 64, i)))
		}
		a = i - 64 < n ? a.subarray(i - 64) : new Uint8Array(0);
		length = a.length;
		tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
		for (i = 0; i < length; i += 1) {
			tail[i >> 2] |= a[i] << (i % 4 << 3)
		}
		tail[i >> 2] |= 128 << (i % 4 << 3);
		if (i > 55) {
			md5cycle(state, tail);
			for (i = 0; i < 16; i += 1) {
				tail[i] = 0
			}
		}
		tmp = n * 8;
		tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
		lo = parseInt(tmp[2], 16);
		hi = parseInt(tmp[1], 16) || 0;
		tail[14] = lo;
		tail[15] = hi;
		md5cycle(state, tail);
		return state
	}

	function rhex(n) {
		var s = "",
			j;
		for (j = 0; j < 4; j += 1) {
			s += hex_chr[n >> j * 8 + 4 & 15] + hex_chr[n >> j * 8 & 15]
		}
		return s
	}

	function hex(x) {
		var i;
		for (i = 0; i < x.length; i += 1) {
			x[i] = rhex(x[i])
		}
		return x.join("")
	}
	if (hex(md51("hello")) !== "5d41402abc4b2a76b9719d911017c592") {
		add32 = function(x, y) {
			var lsw = (x & 65535) + (y & 65535),
				msw = (x >> 16) + (y >> 16) + (lsw >> 16);
			return msw << 16 | lsw & 65535
		}
	}
	if (typeof ArrayBuffer !== "undefined" && !ArrayBuffer.prototype.slice) {
		(function() {
			function clamp(val, length) {
				val = val | 0 || 0;
				if (val < 0) {
					return Math.max(val + length, 0)
				}
				return Math.min(val, length)
			}
			ArrayBuffer.prototype.slice = function(from, to) {
				var length = this.byteLength,
					begin = clamp(from, length),
					end = length,
					num, target, targetArray, sourceArray;
				if (to !== undefined) {
					end = clamp(to, length)
				}
				if (begin > end) {
					return new ArrayBuffer(0)
				}
				num = end - begin;
				target = new ArrayBuffer(num);
				targetArray = new Uint8Array(target);
				sourceArray = new Uint8Array(this, begin, num);
				targetArray.set(sourceArray);
				return target
			}
		})()
	}

	function toUtf8(str) {
		if (/[\u0080-\uFFFF]/.test(str)) {
			str = unescape(encodeURIComponent(str))
		}
		return str
	}

	function utf8Str2ArrayBuffer(str, returnUInt8Array) {
		var length = str.length,
			buff = new ArrayBuffer(length),
			arr = new Uint8Array(buff),
			i;
		for (i = 0; i < length; i += 1) {
			arr[i] = str.charCodeAt(i)
		}
		return returnUInt8Array ? arr : buff
	}

	function arrayBuffer2Utf8Str(buff) {
		return String.fromCharCode.apply(null, new Uint8Array(buff))
	}

	function concatenateArrayBuffers(first, second, returnUInt8Array) {
		var result = new Uint8Array(first.byteLength + second.byteLength);
		result.set(new Uint8Array(first));
		result.set(new Uint8Array(second), first.byteLength);
		return returnUInt8Array ? result : result.buffer
	}

	function hexToBinaryString(hex) {
		var bytes = [],
			length = hex.length,
			x;
		for (x = 0; x < length - 1; x += 2) {
			bytes.push(parseInt(hex.substr(x, 2), 16))
		}
		return String.fromCharCode.apply(String, bytes)
	}

	function SparkMD5() {
		this.reset()
	}
	SparkMD5.prototype.append = function(str) {
		this.appendBinary(toUtf8(str));
		return this
	};
	SparkMD5.prototype.appendBinary = function(contents) {
		this._buff += contents;
		this._length += contents.length;
		var length = this._buff.length,
			i;
		for (i = 64; i <= length; i += 64) {
			md5cycle(this._hash, md5blk(this._buff.substring(i - 64, i)))
		}
		this._buff = this._buff.substring(i - 64);
		return this
	};
	SparkMD5.prototype.end = function(raw) {
		var buff = this._buff,
			length = buff.length,
			i, tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
			ret;
		for (i = 0; i < length; i += 1) {
			tail[i >> 2] |= buff.charCodeAt(i) << (i % 4 << 3)
		}
		this._finish(tail, length);
		ret = hex(this._hash);
		if (raw) {
			ret = hexToBinaryString(ret)
		}
		this.reset();
		return ret
	};
	SparkMD5.prototype.reset = function() {
		this._buff = "";
		this._length = 0;
		this._hash = [1732584193, -271733879, -1732584194, 271733878];
		return this
	};
	SparkMD5.prototype.getState = function() {
		return {
			buff: this._buff,
			length: this._length,
			hash: this._hash.slice()
		}
	};
	SparkMD5.prototype.setState = function(state) {
		this._buff = state.buff;
		this._length = state.length;
		this._hash = state.hash;
		return this
	};
	SparkMD5.prototype.destroy = function() {
		delete this._hash;
		delete this._buff;
		delete this._length
	};
	SparkMD5.prototype._finish = function(tail, length) {
		var i = length,
			tmp, lo, hi;
		tail[i >> 2] |= 128 << (i % 4 << 3);
		if (i > 55) {
			md5cycle(this._hash, tail);
			for (i = 0; i < 16; i += 1) {
				tail[i] = 0
			}
		}
		tmp = this._length * 8;
		tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
		lo = parseInt(tmp[2], 16);
		hi = parseInt(tmp[1], 16) || 0;
		tail[14] = lo;
		tail[15] = hi;
		md5cycle(this._hash, tail)
	};
	SparkMD5.hash = function(str, raw) {
		return SparkMD5.hashBinary(toUtf8(str), raw)
	};
	SparkMD5.hashBinary = function(content, raw) {
		var hash = md51(content),
			ret = hex(hash);
		return raw ? hexToBinaryString(ret) : ret
	};
	SparkMD5.ArrayBuffer = function() {
		this.reset()
	};
	SparkMD5.ArrayBuffer.prototype.append = function(arr) {
		var buff = concatenateArrayBuffers(this._buff.buffer, arr, true),
			length = buff.length,
			i;
		this._length += arr.byteLength;
		for (i = 64; i <= length; i += 64) {
			md5cycle(this._hash, md5blk_array(buff.subarray(i - 64, i)))
		}
		this._buff = i - 64 < length ? new Uint8Array(buff.buffer.slice(i - 64)) : new Uint8Array(0);
		return this
	};
	SparkMD5.ArrayBuffer.prototype.end = function(raw) {
		var buff = this._buff,
			length = buff.length,
			tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
			i, ret;
		for (i = 0; i < length; i += 1) {
			tail[i >> 2] |= buff[i] << (i % 4 << 3)
		}
		this._finish(tail, length);
		ret = hex(this._hash);
		if (raw) {
			ret = hexToBinaryString(ret)
		}
		this.reset();
		return ret
	};
	SparkMD5.ArrayBuffer.prototype.reset = function() {
		this._buff = new Uint8Array(0);
		this._length = 0;
		this._hash = [1732584193, -271733879, -1732584194, 271733878];
		return this
	};
	SparkMD5.ArrayBuffer.prototype.getState = function() {
		var state = SparkMD5.prototype.getState.call(this);
		state.buff = arrayBuffer2Utf8Str(state.buff);
		return state
	};
	SparkMD5.ArrayBuffer.prototype.setState = function(state) {
		state.buff = utf8Str2ArrayBuffer(state.buff, true);
		return SparkMD5.prototype.setState.call(this, state)
	};
	SparkMD5.ArrayBuffer.prototype.destroy = SparkMD5.prototype.destroy;
	SparkMD5.ArrayBuffer.prototype._finish = SparkMD5.prototype._finish;
	SparkMD5.ArrayBuffer.hash = function(arr, raw) {
		var hash = md51_array(new Uint8Array(arr)),
			ret = hex(hash);
		return raw ? hexToBinaryString(ret) : ret
	};
	return SparkMD5
}

export default createMd5();